body,
html {
    margin: 0;
    padding: 0;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f0f0f0;
    /* 背景颜色，可选 */
}

.shadow-ball {
    width: 150px;
    height: 150px;
    background: radial-gradient(circle at right, #ffffffd0 30%, #6B6B6B 70%, #484848 100%);
    /* background-image: linear-gradient(to top left, #ffffff 30%, #828282 70%, #484848 100%); */
    /* 渐变效果 */
    border-radius: 50%;
    /* 将方形元素变为圆形 */
    box-shadow: 0 0 30px rgb(127, 127, 127);
    /* 添加阴影效果 */
}